powerpc: Mark 4xx as Orphan in MAINTAINERS

The 4xx platforms are no longer maintained.

Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Acked-by: Alistair Popple <alistair@popple.id.au>
Link: https://lore.kernel.org/r/20200224233146.23734-4-mpe@ellerman.id.au
This commit is contained in:
Michael Ellerman 2020-02-25 10:31:42 +11:00
commit 1ca99770e5